package com.hstc.gateway.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Component
@Slf4j
public class RtGlobalFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();

        String uri = request.getURI().toString();
        long l = System.currentTimeMillis();
        log.info("请求{}开始,时间：{}",uri,l);
//        ========================以上是前置逻辑===========================
        Mono<Void> filter = chain.filter(exchange)
                .doFinally(signalType -> {
                    //====================以下是后置逻辑===========================
                    log.info("请求{}结束,耗时：{}",uri,System.currentTimeMillis()-l);
                });//放行
        return filter;
    }

    @Override
    public int getOrder() {
        return 0;
    }
}
